table,td{
    border: 1px solid palegoldenrod;

    border-collapse: collapse;
}
table{
    /*折叠边框 变成单边框*/
    border-collapse: collapse;
    width: 500px;
    height: 300px;
}
td{
    text-align: center;
    vertical-align: middle;
    /*vertical-align: bottom;*/
    /*vertical-align: top;*/
    /*表格填充*/
    padding: 10px;
   /*表格颜色*/
    background-color:green; color: white;
}
tr{

}